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Finding the Fourth Proportional to 675,240.06, 931,727.60 and 388,704.56

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Solution

The fourth proportional to 675,240.06, 931,727.60 and 388,704.56 is: 536,352.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,240.06 : 931,727.60 = 388,704.56 : x
  2. Step 2: Convert to fraction form
    675,240.06/931,727.60 = 388,704.56/x
  3. Step 3: Cross multiply
    675,240.06x = 931,727.60 × 388,704.56
  4. Step 4: Simplify right side
    675,240.06x = 362,166,766,797.86
  5. Step 5: Solve for x
    x = 362,166,766,797.86/675,240.06
  6. Step 6: Final answer
    x = 536,352.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.